@Drac
1) The connection between the frequencies of these 3 light skin alleles and the fairness of the skin among West Eurasians, has been proved by several peer reviewed studies, and I doubt you can prove them wrong.
I see, so when a study seems to say what you want to hear then its "peer-reviewedness" is evident and must be accepted as the "Law", but when other peer-reviewed studies don't say what you want to hear then it must be a deceitful manipulation, apparently by evil Iberian researchers. I have only seen a few of your posts so far but somehow I already knew you were going to try such "arguments".
Plus how unreliable these "predictions" based on single SNPs really are can be seen by using a similar argument as the one you tried to use against Jablonski & Chaplin's study: the frequencies of some of them are actually higher in people like Iraqis, Iranians, Turks, etc. than in some Iberian, some Greek and even some Scottish groups. According to your way of trying to interpret these frequencies, we should conclude that even people like Orcadians are "darker" than Middle Easterners.
2) I've only picked the largest clusters from the Alfred Alleles database. Generally speaking the bigger the cluster the more reliable it is. Smaller clusters as the ones from Madrid or France should be ignored. I did not notice the Galician cluster.
There's lots of problems with your arbitrary approach, since besides the issue that many samples come from different locations (thus making the issue of sample size not as important in the case of regions where no more studied samples are available) some of these studies also seem to deal only with "predictions" for eye color, or only with skin pigmentation, so some of these results might actually be in accordance with the actual observed data (in the case of light eye color, for example, we should expect Italians to have more than Spaniards since this agrees with the actual pigmentation surveys of those countries) while others don't match the observed results (Italy, for example, has a higher frequency of darker skin tones not only than Spain, but also than Greece.)
Another thing that you carefully avoid saying: from the data gathered in that database it seems that there's much more Italian samples from all sorts of locations within Italy that have been studied than you want to call attention to (since many of them score lower than some of the Spanish ones, obviously.) Since you like to use the "bigger sample size, the more accuracy" card, we can easily use it against you by gathering together all these "predictions" for Italians and contrasting them to the higher Spanish ones. In the case of the allele that you used, the majority of the Italian samples scored in the lower 400s, below both the Galicia and Madrid samples. Only the Italian samples from Verona that you used and 3 or 4 other samples from unspecified Italian regions came up above those two.
By the way, the whole unreliability of these "predictions" based on single SNPs can again be plainly seen by using your very own argument of sample size too: the French sample from Paris was even bigger than the Italian sample from Verona, yet it came up below it. Are we to conclude that the French are actually somewhat darker than Italians? Somehow I think that a most definite "NO!" is the only answer here, as it plainly contradicts every study with actual observed pigmentation for populations of both countries.
3) You should consider the frequencies of the 3 light skin alleles, not just one. Galicians and Iberians as whole have much lower percentages of the 3 light skin alleles than any mainland Italian. That of course means that Iberians are much darker skinned.
Nope, see above reply to your point 2, for why your attempts at interpreting these "predictions" are quite problematic, to say the least.
4) These results are in line with the ones from the IrisPlex System (rate of prediction accuracy of over 90%) which shows the lightest Italians as being about 2 times lighter than the lightest Iberians.
That Italy should score lighter in the eye department does not surprise me at all, since it actually agrees with the empirical data for pigmentation for both nations. But it is hardly as you want to paint it too, since the "lightest eyed Iberians" have not been tested in any of these studies. The difference would obviously not be as big as you want to believe it is if that had been the case.